N2 Nut/Nipple Assembly, 1/4" MNPT threads
CGA-580 adapter to replace the CO2 Nut/Nipple Assembly that comes standard with Power Tank regulators.
If you want to convert your Power Tank regulator to full time N2 use, this is the item to get. If you want to be able to swap between gases, get the FIT-0002 CO2 to N2 Adapter.